Abstract

A gallium doped silicon (Si:Ga) extrinsic photoconductive detector was tested for sensitivity and quickness of response. The developmental goal for this detector material was high speed operation without compromised detectivity (D*). The high speed, p-type infrared photoconductor, with photoconductive gain less than unity, was tested at 10.5 μm to determine an experimental value for the detectivity-bandwidth product of D*f* = 3.69 × 10¹⁸ cm-Hz^3/2/W. Subsequently a theoretical model taking into account the optical absorption profile and majority-carrier-transport processes within the detector was developed. It agreed with experimental data and corroborated the theory.

© 1990 Optical Society of America

Extrinsic silicon photodetector characterization: errata

J. P. Garcia and E. L. Dereniak
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Extrinsic Detectors

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